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For non coherent reception of PSK _____ is used.

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For non coherent reception of PSK _____ is used.

(a) Differential encoding

(b) Decoding

(c) Differential encoding & Decoding

(d) None of the mentioned

The question was posed to me in semester exam.

This interesting question is from M-ary Modulation and Amplifiers topic in section Modulation and Coding Trade-off of Digital Communications

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Correct answer is (c) Differential encoding & Decoding

Easiest explanation: For non coherent reception of PSK, differential encoding is used at the transmitter and decoding is used at the receiver.

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